Ceiling and wall structure



Oct. 14, 1930. F. M. VENZIE CEILING AND WALL STRUCTURE Filed March 5, 1929 fic/6.2.

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Patented Oct. 14, 1930 PATENT OFFICE FREDERICK IMI. "VENZIE, F PHILADELPHIA, PENNSYLVANIA CEILING AND WALL STRUCTURE Application led March 5, 1929. Serial No. 344,252.

' The present invention, generally stated, relates to a wall or ceiling structure and has more -especial relation to the rovision of slabs for not only providing re proofing proclivities but also to provide acoustic properties so that unnecessary and vibratory noises or sounds are precluded.

The leading object of the present invention may be said to reside in the provision of a very thin slab of cementitious material provided upon one face with aplurality of dished cavities and preferably upon its other face with a roughened surface for the application of plaster.

A further object of the present invention is to provide a slab of the character stated in yvhich a Series of the dished cavities are arranged to contain, wholly'or in part, an asbestos filling tending to facilitate the acoustic properties of the wall or ceiling as erected.

A further object of the present invention -is to provi-de a slab of the character stated which may be erected by nailing the same to a partition, the structure of the slab being such that it is possible to nail the same to any existing structure.

A further object of the present invention is to provide a'slab` of the character stated in which the slab may be roughened upon its front surface to accept plaster, or may be finished so that plaster is not necessary.

With these and other objects in view, the invention consists of the novel construction y hereinafter described and finally claimed. The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying draw-v ings forming part hereof, and in which:

Fig. 1,-is a fragmentary view in vertical section illustrating a manner of applying the slab of the invention to a partition, which may be a wall or a ceiling.

Fig. 2, is a fragmentary view in elevation illustrating the parts shown in Fig. 1.

Fig. 3 is a fragmentary view in perspective illustrating a portion of the slab of the invention.

Fig. 4, is a' fragmentary view in vertical section illustrating details of construction preferred by me, since the same has been found in practice to give satisfactory and reliable'results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

Referring to the drawings in detail, the reference numeral 1 designates a wall, ceiling or other support to which is applied the slabs of the invention. Each slab comprises, as clearly shown in Fig. 3, a rectilinear member 2 of cementitious material and relatively thin in cross section, as clearly shown in Fig. 1. The slab 2 upon one face is provided with a plurality of dished cavities 3 arranged in pairs laterally considered and in 'alignment vertically considered. The slabs 2 are secured to a wall, ceiling, or other building structure by means of nails 4, as shown in Figs. v1 and 2, it being understood that the composition of the cementitious slabs is suiiciently tough -to permit of the penetration of nails. These cavities or dished portions 3 are preferably rectilinear in contour and abut or are juxtaposed immediately against the building' structure 1. When nailed to place the slabs thus provide an air space between the structure 1 and the slabs. These air spaces serve to provide means to prevent the. resounding of noises. In order further to deaden Vundesirable noises, some of the cavities 3 are completely illedwith asbestos or similar material 5 and other of the cavities 3 are only partially filled with asbestos or similar material. Thus, some of the cavities 3 are completely lled with asbestos material, some partially filled with asbestosmaterial, and others have no asbestos material therein at all.

In practice-I prefer torou hen that face of the slab opposite the dishe portions 3 as at 6. This roughened portion 6 in practice v v has applied thereto a thin coating of plaster 7 see Fig. 1. In the connection, however,Iwish it understood that instead of roughening they face of the slab 2 I may leave the face per- 5 fectly plane and finish in` a manner to provide a wall or ceiling surface. In other words, the slabs may be -finished with an exposed surface which is smooth and acceptable as a wall structure, or may be roughened as shown v lo in Fig. 4 to accept a coat of plaster.

f What I claim is:

' 1. In a building construction, a slab of cementitious material which is relatively thin in cross section and is provided upon one face with a plurality of dished cavities arranged in pairs laterally considered and in alignment vertically considered, which dished face of the slab is arranged to be juxtaposed with respect to a flat partition or ceiling to form an air space between the building structure and said slab.

l2. In a building` structure a slab of cementitious'material which is relativelyv thin in cross section and is provided upon one face y with a plurality of unperforated dished cavities, and arranged in pairs laterally considered and in ali nmentvertically consider ed, which dished ace of the slab is arranged to be juxtaposed witlrrespe'ct to-a dat partition or ceiling to form an air space between the building structureand said slab, and asbestos filling for a. series of said dished cavities.

. 3. In a building construction a slab of cementitious material which is relatively thin in cross section and is provided upon one i face with a roughened surface and upon the opposed surface with a plurality of dished cavities, arranged in pairs laterally consider- '40 ed and in alignment vertically considered, which dishedy face of the slab is arranged to be juxtaposedwith respect to a dat partition or ceiling to form an air s ace between the building structure and sai slab.

FREDERICK M. VENZIE.. 

